Didn't David Gerard state that Scientologists develop a permanent thousand-yard stare as a result of OT-TR0/TR0? [1] My point is that this is a potential failure mode, i.e. not something that anyone actually interested in social skills would want.

[1] edit: apparently, it's common enough to be a stereotype, which is effectively what I meant. I wouldn't expect this to apply to every member of the church, much less everyone who has taken an intro course, but it still counts as a potential problem.